Rails server could not be killed

[smythey21]

After running my rspec tests through sauce_ruby it looks like my rails server isn't killed properly, which means the next test I run will fail (unless I find the PID of the server and kill it, which isn't hard just kind of annoying).

E, [2016-02-19T17:36:14.470000 #48154] ERROR -- : 14802 - Rails server could not be killed. Did it fail to start?

Finished in 2 minutes 32.1 seconds (files took 14.95 seconds to load)
1 example, 0 failures

Randomized with seed 54956

ArgumentError: wrong number of arguments (2 for 1)
            stop at /Users/kevinsmyth/.rbenv/versions/jruby-9.0.4.0/lib/ruby/gems/shared/gems/childprocess-0.5.9/lib/childprocess/jruby/process.rb:82
  block in start at /Users/kevinsmyth/.rbenv/versions/jruby-9.0.4.0/lib/ruby/gems/shared/gems/sauce-3.7.1/lib/sauce/utilities/rails_server.rb:82

I tracked it down to this line and this line. According to the latest version of childprocess, stop only takes one optional parameter (a timeout).

I will submit a PR shortly to address this. Please let me know if I'm missing anything else here. Thanks!